The Apocalypse Pantheon ballooned due to the recruitment of the two true gods. The 9 Crowns have 3 true gods to boost their title now. This has give them 3% boost. It will only increase when more godlings around them evolve.
They can't wait for that, though. So they went to territories beyond their immediate surroundings to recruit more true gods.
Other gods might be content with what they have achieved for now. After all, they have eliminated the major enemies around them and have crowned themselves as the Supreme god in the surrounding area.
They don't even need to preach and actively spread their religion anymore to gain believers. Their surbodinate gods will do that for them every time they preach.
Not only that, the peace that will ensue because of the stability will make the orcs prosper, which will increase their population and lead to an increase in their Authority over time.